"This was a despicable incident that has left an elderly man traumatised.
"Detectives are shocked at the level of unnecessary violence the victim endured in a sustained attack in his own home and we are appealing to the community to help us find the person responsible.
"We take these types of incidents extremely seriously and urge anyone who may have seen a man acting suspiciously in the area either around the time of the incident, or in the days prior to the offence, to call us so we can take action against the offender."
More top news
A mild night with winds strengthening. A windy day on Sunday with sunny spells and warmer air. Kerrie has the detail......
Ukip leader Paul Nuttall has announced that he will be standing for the seat of Boston and Skegness in the forthcoming General Election.
Here's the forecast for the next few days....